35 lines
721 B
Python
35 lines
721 B
Python
#!/usr/bin/env python3
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from scipy import signal
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import matplotlib.pyplot as plt
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import numpy as np
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def main():
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fs = 8000.0
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coeffs = [
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-0.0047233836,
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0.04476544,
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-0.038443737,
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-0.0911246,
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0.2894902,
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0.6123418,
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0.2894902,
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-0.0911246,
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-0.038443737,
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0.04476544,
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-0.0047233836,
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]
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freq_space = np.linspace(-fs/2 / (fs/2)*np.pi, fs/2 / (fs/2)*np.pi, 512)
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freqs, response = signal.freqz(coeffs, worN=freq_space)
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response = 10 * np.log(abs(response))
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plt.plot(fs/2*freqs/(np.pi), response)
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plt.grid()
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plt.show()
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if __name__ == '__main__':
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main() |